From: Patrick Wildt <patrick@blueri.se>
Date: Sun, 25 Mar 2018 17:54:03 +0000 (+0200)
Subject: efi_loader: initialize device path on alloc
X-Git-Tag: v2018.05-rc2~45^2~17
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=eab2dc37ee457191583c5d9ff26ce9d7ccda3637;p=u-boot

efi_loader: initialize device path on alloc

Since the backing memory for a new device path can contain stale
data we have to make sure that we zero the buffer.  Otherwise some
code paths that don't set all fields in a structure backed by this
device path might contain unwanted stale data.

Signed-off-by: Patrick Wildt <patrick@blueri.se>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
---

diff --git a/lib/efi_loader/efi_device_path.c b/lib/efi_loader/efi_device_path.c
index 22627824f0..ab28b2fd25 100644
--- a/lib/efi_loader/efi_device_path.c
+++ b/lib/efi_loader/efi_device_path.c
@@ -66,6 +66,7 @@ static void *dp_alloc(size_t sz)
 		return NULL;
 	}
 
+	memset(buf, 0, sz);
 	return buf;
 }